Synthesis, electrochemical characterization and impedance studies on novel thiophene-nonylbithiazole-thiophene comonomer

Fevzi Ç Cebeci, Hülya Geyik, Esma Sezer, A. Sezai Sarac*

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33 Atıf (Scopus)

Özet

In this contribution, synthesis and characterization of a novel donor acceptor donor type bis(thiophene)-(4,4′-dinonyl-2,2′-bithiazole) comonomer (TNBTT) were performed and the electrochemical characterization of redox properties and electrochemical impedance spectroscopy studies of its polymer on carbon fiber microelectrode (CFME) were reported. The comonomer oxidation onto bare carbon fiber microelectrode starts (Eonset of the TNBTT) at 1.1 V vs. Ag/AgCl. Cyclic voltammetry of the polymer in monomer free electrolyte solution exhibits a well-defined oxidation and reduction peaks, and a linear increase in current densities was monitored. PTNBTT film shows the stability to overoxidation without any electroactivity loss up to +1.6 V vs. Ag/AgCl. Electrochemical impedance studies were performed on CFME/PTNBTT/electrolyte system. An equivalent electrical circuit for this composition was proposed and experimental data were simulated to obtain numerical values of the circuit components. Field emission scanning electron microscopy (FE-SEM) measurements were confirmed that the polymer film was deposited very well onto the surface of the carbon fiber microelectrode.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)113-121
Sayfa sayısı9
DergiJournal of Electroanalytical Chemistry
Hacim610
Basın numarası2
DOI'lar
Yayın durumuYayınlandı - 1 Ara 2007

Finansman

This work was supported in part by the Scientific and Technical Research Council of Turkey (TÜBİTAK) under Projects TBAG-HD (126) 106T157 and 105T222.

FinansörlerFinansör numarası
TÜBİTAK126, 105T222, 106T157
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

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